Tight = walk out
Loose = walk in
Which is opposite of what revlimit is saying.
Least far as I've ever seen.
I still feel that adding the lower pulley helps keep the belt aligned better. I've had less problems once I installed it.
But I'm still running a guided idler pulley as a backup option. Mine's just a problem car though ...
Don't "think outside the box".
There is no box.
Do it correct, or do it twice.